In a dihybrid cross using Mendelian inheritance, if both parents are heterozygous for both traits, what will be the phenotypic ratio of their offspring?
A) 3:1
B) 1:2:1
C) 1:1
D) 9:3:3:1

Question

Quizplus · Accepted Answer

In a dihybrid cross between two heterozygous individuals, the expected phenotypic ratio is 9:3:3:1, which means that for every 16 offspring, 9 will have both dominant traits, 3 will have one dominant and one recessive trait, 3 will have the other dominant and recessive trait, and 1 will have both recessive traits. This ratio results from the independent assortment of two different genes and the fact that each parent can pass on either the dominant or the recessive allele for each gene.

In a Dihybrid Cross Using Mendelian Inheritance, If Both Parents